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Finding the Fourth Proportional to 58,657.20, 87,985.80 and 36,538.80

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Solution

The fourth proportional to 58,657.20, 87,985.80 and 36,538.80 is: 54,808.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,657.20 : 87,985.80 = 36,538.80 : x
  2. Step 2: Convert to fraction form
    58,657.20/87,985.80 = 36,538.80/x
  3. Step 3: Cross multiply
    58,657.20x = 87,985.80 × 36,538.80
  4. Step 4: Simplify right side
    58,657.20x = 3,214,895,549.04
  5. Step 5: Solve for x
    x = 3,214,895,549.04/58,657.20
  6. Step 6: Final answer
    x = 54,808.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.